Improvement in smoke-stacks for locomotives



A. RUSS &1. MclNTOSH.

Smoke-Stacks for Locomotives.

Patented June 23,1874.

No.lr52,418.

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fwd/71% NITED STATES PATENT OFFICE.

ANTHONY ROSS AND JAMES MCINTOSH, OF MEMPHIS, TENNESSEE.

IMPROVEMENT IN SMOKE-STACKS FOR LOCOMOTIVES.

Specification forming part of Letters Patent N0. 152,4 I8, dated June223, 1874; application filed I February 1l, 1874.

To all'whom fit may concern Be it known that we, ANTHONY Ross and J As.MCINTOSH, of the cit-y of Memphis, county of Shelby and State ofTennessee, have invented a Spark-Oonsuming Smoke-Stack for Locomotive orany other SteanrBoiler, which are heated by wood, coal, or othersubstances, of which the following is a specification The object of ourinvention is to obviate the throwing of sparks out of the stacks oflocomotives and other boilers, by eausin g the sparks to take acontinuous upand -down movement in the stack until they escape as a iinedust, unable to set anything on re.

Figure I, in the drawing, represents a ver tical section over line L' l.Fig. II, in the drawing, represents eleva-tion of stack, attached to endof a locomotiveboiler.

a, outside shell ofsmoke-stack 5 b, inside stack leading from smoke-.boxtoward deiiectin g-cone c; c, defleeting-cone, against which the currentof sparks strikes and changes their direction, partly up toward thecircular netting d, partly downward between the inside and outsidestack. Part ofthese sparks, passing downward,

ascend again through the annular opening j' in inside stack and risetoward cone c, against d, annular netting; e, circular opening through.which smoke escapes; f, annular opening in inside stack, throu gh whichth e sparks in descending return toward cone c; g, circular opening andpipes leading from the space m between insife and outside stack downinto the smokebox. The remainder of the sparks in their downward course,after having passed the annular space j', pass through those openingsinto the smokebox, and are moved upward toward the cone by the draftinstack. By these means the sparks keep moving up and down until theyescape as fine dust through the circular opening e. l, saddle, by meansof which smoke-stack is fastened to smoke-box, and which contains thetwo pipes g, through which the sparks descend into the smoke-box; '12,platform on which the cone c is fastened, j, smoke-box.

The arrows indicate the action of the sparks. They are first carried upthrough the main tube b against the cone c, which deiiects them andcauses them to be thrown against the inclined walls ofthe cap a, andthence they fall down into the annular space m, the lighter particlesbeing taken up hy suction through the annular space f, while the.heavier particles fall down through the tubes g, and are thence againcarried up through the main tube.

Ve claim- In asmoke-stack the deflecting-conc c, annular spaces j and m,and communicating pipes g, all arranged and operating substantially asdescribed.

ANTHONY ROSS. JAMES MCINTOSU. XVitnesses:

JULrUs FREDERICK HEi'nEL, J oHN KILGoUR.

